| 摘要 |
PURPOSE:To make it possible to transfer all the information including important warning with low cost by connecting an integrated supervisory center and plural exchange stations in one loop and by providing two information transfer routes which transfer the information reverse direction each other. CONSTITUTION:Monitored exchange stations 2a-2z are connected in a loop as a whole by information transfer routes 3a-3y, 4a-4y and the exchange stations at each end, 2a and 2z are connected to integrated supervisory center by information transfer routes 5a, 5b, 5c, and 5d. Also, warning collection circuit to collect and edit the monitor warning information and an information insertion circuit to insert the edited warning information to the transfer routes 3a, 4b are provided with each exchange station 2a-2z. By this constitution, in case where a trouble occurred at a certain exchange station or at information trans fer route between certain exchange stations, the supervisory warning information of each exchange station is sent to the center 1 by the folded connection of transfer routes 3a-3y, 5a, 5d, and 4a-4y, 5b, 5c. Namely, it becomes possible to transfer all the information including important warning information by low cost. |
